Why is formation in a creature whose best job is not attacking?

Does seem a bit weird. Works for flavour though, after all, not all of the formation is the front line - the people at the back count too.

Since it won't likely be attacking, it doesn't have much of an effect. But hey, sometimes you will, and that makes a fun story.

If we're talking flavor, it would make more sense if it was attacking and shooting from the front of the line, yes?

i wanted to make this sort of a multipurpose toolbox card. either you can shoot down attackers/blockers, or you can use it to push your formation count over the edge for being unblockable

It's not that a card shouldn't do different things. It's that its abilities shouldn't exclude each other to accomplish that.